GNU ARM命令行工具基本使用入门

调用格式：
arm-elf-gcc [stage-opt] [other-opts] -mcpu=arm7tdmi in-file -o out-file

常见用法：
将C代码编译为二进制目标文件:
 arm-elf-gcc -c -O2 -g -mcpu=arm7tdmi filename.c -o filename.o

将多个二进制目标文件合并为一个可执行文件:
 arm-elf-ld filename1.o filename2.o … -o filename.elf

将C代码直接编译生成可执行文件:
 arm-elf-gcc -O2 -g -mcpu=arm7tdmi filename.c -o filename.elf

将C代码编译生成汇编代码:
 arm-elf-gcc -S -fverbose-asm -mcpu=arm7tdmi filename.c -o filename.s

arm-elf-objdump option filename | more

objdump displays information about one or more object files.   The  options

control what particular information to display.  This information is mostly useful

to programmers who  are  working  on  the  compilation tools, as opposed to

programmers who just want their program to compile and work.

例如：arm-elf-objdump -S a2.o

使用readelf查看elf文件的内容，例如：arm-elf-readelf -a a2.elf

arm-elf-objcopy有一个很重要的作用是把代码从elf文件中抽取出来,形成可执行的机器码：
例如：arm-elf-objcopy -O binary -R .comment -R .note -S a2.elf a2.bin 
形成的结果文件a2.bin可以烧到flash或下载到内存中去.

objcopy uses the GNU BFD Library to read and write the object

files.  It can write the destination object file in a format different

from that of the source object file.  The exact behavior of objcopy is

controlled by command-line options.

arm-elf-nm用来列出elf文件中使用到的symbol，例如：arm-elf-nm a1.o

转载于http://blog.chinaunix.net/u/29291/showart_234200.html